Question # 1

If V_rms be the root mean square value of emf then its peak to peak value is given by

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An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

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50 Hz

25Hz

100 Hz

75 Hz

The highest value reached by the voltage or current in one cycle is called.

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Peak ot peak value

Peak value

Instantaneous value

Root mean square value

The velocity of an oscillating charge as it moves to and fro along a wire is.

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Changing

Constant

Infinite

zero

Electron vibrating 94,000 times each second will produce radio waves of frequency.

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94 Hz

940 HZ

94 Hz

490 Hz

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

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50 Hz

100 Hz

80 Hz

120 Hz

The peak to peak value of alternating voltage is

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2V_o

V_o

None of these

Resistance of choke is

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zero

Large

Very small

Infinite

The expression P = VI hold only when current and voltage are.

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In phase

Out of phase

At right angle to each other

At angle of 120 ^o

The A.M. transmission frequencies range from

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540 KHz to 1000 KHz

540 Khz to 1600 KHz

520 KHz TO 1600 KHz

520 KHz TO 1400 KHz

The sum of positive and negative peak value called.

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R.M.S. value

P-P value

Peak value

Average value

The inductive reactance of a coil is direction proportional to.

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Inductance

Resistance

Frequency of A.C.

Both frequency of A.C. and inductance

The internal resistance of a capacitor is called:

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Impedance

Resistance

Reactance

Conductance

Unit of impedance is:

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Ohm

Ohm^-1

no unit

Ohm m^-1

Choke consumes extremely small

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Current

Charge

Power

Potential

Direct current can not flow through.

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Inductor

Resistor

Transistor

Capacitor

The unit of impedance is.

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Henry

Hertz

Ampere

Ohm

A resistance frequency the impedance of RLC parallel circuit is.

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Zero

Infinite

Maximum

Minimum

The mean value of A.C. in a cycle is.

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1

0

I2

Nil

The natural frequency of L.C circuit is equal to

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The value of capacitive reactance is given by

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Xc = VI

All of above

The device which allows only the continuous flow of AC through it is.

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Inductor

Battery

Thermistor

Capacitor

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Physics FSC Part 2 Chapter 16 Online MCQ's Test MCQs With Answers

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